#pragma once
#include<iostream>
#include<string>
#include<unistd.h>
#include<cstring>
#include<cassert>
#include<sys/types.h>
#include<sys/stat.h>
#include<sys/wait.h>
#include<vector>
#include<fcntl.h>

using namespace::std;

string fifo_file = "./fifo";
__mode_t  mode = 0666;